import urllib.request
import re
from bs4 import BeautifulSoup


url='https://baike.baidu.com/item/%E7%8C%AA%E5%85%AB%E6%88%92/769'
response = urllib.request.urlopen(url)
html_doc = response.read()
soup = BeautifulSoup(html_doc,'html.parser')


tag_1=soup.find_all('meta')
tag_1=str(tag_1[3])
print(tag_1[14:-22])
